773-023

This premium two-stage air pressure switch is a critical safety component designed for high-efficiency gas furnaces and HVAC heating systems. As a dual-stage air proving switch, it monitors the pressure differential created by the draft inducer motor to ensure that combustion gases are being properly vented before allowing the ignition process to proceed. With precise factory-set points of 0.60" WC and 0.20" WC, this switch facilitates the reliable operation of two-stage heating cycles, allowing your unit to safely transition between low and high heat outputs. If your furnace is experiencing ignition failure, frequent cycling, or error codes related to air flow or venting, this replacement pressure switch is essential for restoring optimal performance and maintaining the safety standards of your residential or commercial heating equipment.
Type: Air Pressure Switch
Size: Standard compact HVAC component
Application: Used in two-stage gas furnaces and HVAC units to monitor inducer motor pressure and ensure safe combustion venting.
Specifications: Dual-stage operation; Low-stage set point: 0.20" WC; High-stage set point: 0.60" WC; Function: Differential Air Proving.